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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 2174–2184

Bilayer metallic nanofilms as broadband antireflection coatings in terahertz optical systems

Wei En Lai, Huai Wu Zhang, Yao Hua Zhu, Qi Ye Wen, Wei Wei Du, and Xiao Li Tang  »View Author Affiliations


Optics Express, Vol. 22, Issue 3, pp. 2174-2184 (2014)
http://dx.doi.org/10.1364/OE.22.002174


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Abstract

We present the potential of ultrathin bilayer metallic nanofilms for use as broadband antireflection coatings in the terahertz frequency range. The metallic layers are modeled using a wave-impedance matching approach. The experimental and theoretical results are in good agreement. Further, a novel method using our broadband antireflection coatings is proposed to eliminate unwanted reflections that interfere with the important reflection from the sample in terahertz reflection measurement. The proposed method significantly improves the calculation of the optical properties of liquid and biological samples.

© 2014 Optical Society of America

OCIS Codes
(160.3900) Materials : Metals
(310.1210) Thin films : Antireflection coatings
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Thin Films

History
Original Manuscript: August 7, 2013
Revised Manuscript: October 22, 2013
Manuscript Accepted: January 9, 2014
Published: January 27, 2014

Citation
Wei En Lai, Huai Wu Zhang, Yao Hua Zhu, Qi Ye Wen, Wei Wei Du, and Xiao Li Tang, "Bilayer metallic nanofilms as broadband antireflection coatings in terahertz optical systems," Opt. Express 22, 2174-2184 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-3-2174


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